Go to Page Main Content
NASA - Goddard Institute for Space Studies + NASA Portal
+ Goddard Space Flight Center
+ GSFC Earth Sciences Division
FIND IT @ NASA
NASA Homepage Goddard Institute for Space Studies

ABSTRACT

Zahn et al. 1974

Zahn, J.-P., J. Toomre, E.A. Spiegel, and D.O. Gough, 1974: Nonlinear cellular motions in Poiseuille channel flow. J. Fluid Mech., 64, 319-346, doi:10.1017/S0022112074002424.

We expand the equations describing plane Poiseuille flow in Fourier series in the co-ordinates in the plane parallel to the bounding walls. There results an infinite system of equations for the amplitudes, which are functions of time and of the cross-stream co-ordinate. This system is drastically truncated and the resulting set of equations is solved accurately by a finite difference method. Three truncations are considered: (I) a single mode with dependence only on the downstream co-ordinate and time, (II) the mode of (I) plus its first harmonic, (III) a single three-dimensional mode. For all three cases, for a variety of initial conditions, the solutions evolve to a steady state as seen in a particular moving frame of reference. No runaways are encountered.

Citation Styles

Show: ACP, AGU, AMS, ApJ, JQSRT, Science style

+ GISS Home

PUBLICATIONS
  • Publications Main Page
  • Authors
  • GISS Best Publication Award
  • Dissertations
  • Advanced Search
  • Publications Help
USA.gov

End of Page